Examples with SessionDestroyListener com.vaadin.server.SessionDestroyListener used on opensource projects

Example 1 with SessionDestroyListener

use of com.vaadin.server.SessionDestroyListener in project opennms by OpenNMS.

the class VaadinOSGiServlet method createServletService.

@Override
protected VaadinServletService createServletService(DeploymentConfiguration deploymentConfiguration) throws ServiceException {
    final VaadinServletService service = super.createServletService(deploymentConfiguration);
    service.addSessionInitListener(new SessionInitListener() {

        @Override
        public void sessionInit(SessionInitEvent event) throws ServiceException {
            final VaadinSession session = event.getSession();
            m_sessions.add(session);
            if (session.getUIProviders().isEmpty() || !session.getUIProviders().contains(m_provider)) {
                session.addUIProvider(m_provider);
            }
        }
    });
    service.addSessionDestroyListener(new SessionDestroyListener() {

        @Override
        public void sessionDestroy(SessionDestroyEvent event) {
            final VaadinSession session = event.getSession();
            m_sessions.remove(session);
            if (session.getUIProviders().contains(m_provider)) {
                session.removeUIProvider(m_provider);
            }
        }
    });
    // Additional listeners
    SessionListenerRepository sessionListenerRepository = SessionListenerRepository.getRepository(m_context);
    if (sessionListenerRepository != null) {
        service.addSessionInitListener(sessionListenerRepository);
        service.addSessionDestroyListener(sessionListenerRepository);
    }
    // The Default location of the favicon is "theme://favicon.ico".
    // However the theme may not provide a favicon. To avoid each theme to host the favicon.ico file, we just use
    // the one defined in /opennms
    service.addSessionInitListener(new SessionInitListener() {

        @Override
        public void sessionInit(SessionInitEvent event) throws ServiceException {
            event.getSession().addBootstrapListener(new BootstrapListener() {

                @Override
                public void modifyBootstrapPage(BootstrapPageResponse response) {
                    response.getDocument().head().getElementsByAttributeValue("rel", "shortcut icon").attr("href", "/opennms/favicon.ico");
                    response.getDocument().head().getElementsByAttributeValue("rel", "icon").attr("href", "/opennms/favicon.ico");
                }

                @Override
                public void modifyBootstrapFragment(BootstrapFragmentResponse response) {
                }
            });
        }
    });
    return service;
}

Example 2 with SessionDestroyListener

use of com.vaadin.server.SessionDestroyListener in project opennms by OpenNMS.

the class TopologyUI method init.

@Override
protected void init(final VaadinRequest request) {
    // Register a cleanup
    request.getService().addSessionDestroyListener((SessionDestroyListener) event -> m_widgetManager.removeUpdateListener(TopologyUI.this));
    try {
        m_headerHtml = getHeader(((VaadinServletRequest) request).getHttpServletRequest());
    } catch (final Exception e) {
        LOG.error("failed to get header HTML for request " + request.getPathInfo(), e.getCause());
    }
    // create VaadinApplicationContext
    m_applicationContext = m_serviceManager.createApplicationContext(new VaadinApplicationContextCreator() {

        @Override
        public VaadinApplicationContext create(OnmsServiceManager manager) {
            VaadinApplicationContextImpl context = new VaadinApplicationContextImpl();
            context.setSessionId(request.getWrappedSession().getId());
            context.setUiId(getUIId());
            context.setUsername(request.getRemoteUser());
            return context;
        }
    });
    m_verticesUpdateManager = new OsgiVerticesUpdateManager(m_serviceManager, m_applicationContext);
    m_serviceManager.getEventRegistry().addPossibleEventConsumer(this, m_applicationContext);
    // Set the algorithm last so that the criteria and SZLs are
    // in place before we run the layout algorithm.
    m_graphContainer.setApplicationContext(m_applicationContext);
    createLayouts();
    // Set up an error handler for UI-level exceptions
    setupErrorHandler();
    // Add an auto refresh handler to the GraphContainer
    setupAutoRefresher();
    loadUserSettings();
    // If no Topology Provider was selected (due to loadUserSettings(), fallback to default
    if (Strings.isNullOrEmpty(m_graphContainer.getMetaTopologyId())) {
        CheckedOperation defaultTopologySelectorOperation = getDefaultTopologySelectorOperation(m_bundlecontext);
        // no default found, abort
        Objects.requireNonNull(defaultTopologySelectorOperation, "No default GraphProvider found.");
        defaultTopologySelectorOperation.execute(Lists.newArrayList(), new DefaultOperationContext(TopologyUI.this, m_graphContainer, DisplayLocation.MENUBAR));
    }
    // Add a request handler that parses incoming focusNode and szl query parameters
    TopologyUIRequestHandler handler = new TopologyUIRequestHandler();
    getSession().addRequestHandler(handler);
    // deal with those in init case
    handler.handleRequestParameter(request);
    // Add the default criteria if we do not have already a criteria set
    if (getWrappedVertexHopCriteria(m_graphContainer).isEmpty() && noAdditionalFocusCriteria()) {
        List<Criteria> defaultCriteriaList = m_graphContainer.getTopologyServiceClient().getDefaults().getCriteria();
        if (defaultCriteriaList != null) {
            // set default
            defaultCriteriaList.forEach(m_graphContainer::addCriteria);
        }
    }
    // We set the listeners at the end, to not fire them all the time when initializing the UI
    setupListeners();
    // We force a reload to trigger a fireGraphChanged()
    m_graphContainer.setDirty(true);
    m_graphContainer.redoLayout();
    // Trigger a selectionChanged
    m_selectionManager.selectionChanged(m_selectionManager);
}